[FLINK-24001] Support evaluating individual window table-valued function in runtime

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.15.0
• Fix Version/s: 1.15.0
• Component/s: Table SQL / Runtime
• Labels: pull-request-available
• Release Note: Flink now supports evaluating individual window table-valued functions. This means that window table-valued functions no longer require to be used with aggregate operation.
• Assignee: Jing Zhang
• Reporter: Jing Zhang
• Created: 26/Aug/21 15:29
• Updated: 29/Nov/21 11:45
• Resolved: 23/Nov/21 05:36

Description

Currently, window table-valued function has to be used with other window operation, such as window aggregate, window topN and window join. 

In the ticket, we aim to support evaluating individual window table-valued function in runtime, which means, introduce an operator to handle this.

Issue Links

• links to: GitHub Pull Request #17673